The passport was en regle: she knew she had nothing to fear.
Not a button, not a moustache even, escaped his notice, and whoever was not en regle was certain to be punished.
This deed of gift is en regle, and is undersigned by his grace the Russian ambassador.
Passports are examined by the police, and if en regle, the owners are not likely to be troubled.
All European travelers know the value and the awkwardness of passports, and the importance of securing them en regle.